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DESCRIPTION SPECIFICATION Connecting Rod Journal Diameter 53.17 to 53.23 mm (2.0934 to 2.0955 in.) Connecting Rod Journal Width 27.18 to 27.33 mm (1.070 to 1.076 in.) Out-of-Round (MAX) 0.013 mm (0.0005 in.) Taper (MAX) 0.013 mm (0.0005 in.) CYLINDER BLOCK Deck Height 240.03 to 240.18 mm (9.450 to 9.456 in.) Deck Clearance (Below Block) 0.546 mm (0.0215 in.) Cylinder Bore Diameter Standard 98.45 to 98.48 mm (3.8759 to 3.8775 in.) Taper 0.025 mm (0.001 in.) Out-ofRound 0.025 mm (0.001 in.) Tappet Bore Diameter 23.000 to 23.025 mm (0.9055 to 0.9065 in.) Flatness 0.03 mm per 25 mm (0.001 in. per 1 in.) 0.05 mm per 152 mm (0.002 in. per 6 in.) Flatness Max. 0.20 mm max. for total length (0.008 in. max. for total length) Main Bearing Bore Diameter 68.3514 to 68.3768 mm (2.691 to 2.692 in.) CONNECTING ROD Total Weight (Less Bearing) 663 to 671 grams (23.39 to 23.67 oz.) Length (Center-to-Center) 155.52 to 155.62 mm (6.123 to 6.127 in.) Piston Pin Bore Diameter 23.59 to 23.62 mm (0.9288 to 0.9298 in.) DESCRIPTION SPECIFICATION Bore (Less Bearings) 56.08 to 56.09 mm (2.2080 to 2.2085 in.) Bearing Clearance 0.025 to 0.076 mm (0.001 to 0.003 in.) Preferred 0.044 to 0.050 mm (0.0015 to 0.0020 in.) Side Clearance 0.25 to 0.48 mm (0.010 to 0.019 in.) Twist (Max.) 0.002 mm per mm (0.002 in. per inch) Bend (Max.) 0.002 mm per mm (0.002 in. per inch.) CYLINDER COMPRESSION PRESSURE Pressure Range 827 to 1,034 kPa (120 to 150 psi) Max. Variation Between Cylinders 206 kPa (30 psi) CYLINDER HEAD Combustion Chamber 55.22 to 58.22 cc (3.37 to 3.55 cu. in.) Valve Guide I. D. (Integral) 7.95 to 7.97 mm (0.313 to 0.314 in.) Valve Stem-to-Guide 0.025 to 0.076 mm Clearance (0.001 to 0.003 in.) Valve Seat Angle Intake 44.5° Exhaust 44.5° Valve Seat Width 1.02 to 1.52 mm (0.040 to 0.060 in.) Valve Seat Runout 0.064 mm (0.0025 in.) Flatness 0.03 mm per 25 mm (0.001 in. per 1 in.) 0.05 mm per 152 mm (0.002 in. per 6 in.) 9 - 116 4.0L ENGINE XJ SPECIFICATIONS (Continued) |